Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
HOFFMAN JAMES DONALD
  2. Issuer Name and Ticker or Trading Symbol
RELIANCE STEEL & ALUMINUM CO [RS]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
EVP, Chief Operating Officer
(Last)
(First)
(Middle)
350 SOUTH GRAND AVENUE, SUITE 5100
3. Date of Earliest Transaction (Month/Day/Year)
02/27/2017
(Street)

LOS ANGELES, CA 90071
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 02/27/2017   M   1,500 A (1) 31,481 D  
Common Stock 02/27/2017   F   602 D $ 85.29 30,879 D  
Common Stock               914 (2) I Held by Trustee of Reliance Steel & Aluminum Co. Employee Stock Ownership Plan
Common Stock               3,354 I Held by Trustee of Reliance Steel & Aluminum Co. 401(k) Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units (1) 02/27/2017   M     1,500   (3)   (3) Common Stock 1,500 $ 0 0 (4) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
HOFFMAN JAMES DONALD
350 SOUTH GRAND AVENUE
SUITE 5100
LOS ANGELES, CA 90071
      EVP, Chief Operating Officer  

Signatures

 /s/ James Donald Hoffman by William A. Smith II as his Attorney-in-Fact   03/10/2017
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Each restricted stock unit represents a contingent right to receive one share of RS common stock and certain dividend equivalents.
(2) Reflects an Employee Stock Ownership Plan allocation that has occurred since the date of the reporting person's last ownership report.
(3) 1,500 restricted stock units vested on February 27, 2017.
(4) The reporting person also owns 3,480 shares of phantom stock (to be satisfied by a cash payment to the reporting person upon the termination of his employment with the Issuer) as of the date of this report, which number increased by 76 shares since the date of the reporting person's last ownership report reporting such shares of phantom stock.

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